Question

For addition, drag tiles onto the board.

To form a group, place one tile on top of another.
What is the sum of -2 and -7?
Board sum: 0
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Answer 1

10

Explanation:

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Answer 2

-9

Explanation:

The sum of -2 and -7 is given as follows;

-2 + (-7)

In mathematical operations, + * - is -.

So we have;

-2 - 7

This gives us: -9